carpenter et a



Nav. 2a 1926.

R. F. CARPENTER ET AL HINGE Filed Jan. 18 1924 Patented Nov.

UNIT

ROBERT F. CARP TO THE SANY OF OHIO.

'lhis invention re hinge structures wh ed tor use on doorA .u is desired to auton'iatically swing when released to a definite position either open or closed. This present invention is an iniprovenient upon the patent to Robert F. Carpenter etal, N o. 1,446,449, granted February 27, 1923..

The objects of the present invention are to provide a gravity roller hinge with the operating mechanism concealed from view and also protected from dirt and the natural elements so as to present an extremely neat appearance and at the same time insure continued smooth working of the parts and prolong the life of the hinge; to provide a telescoping arrangement ot' the parts so as to maint-ain proper centering relation of the same and thereby contribute to the smooth and quietl operation of lthe hinge structure as well as to save wear upon the parts; and finally to provide a` hinge structure ot this type` which is of a comparatively simple nature and which comprises comparatively few parts, with increased and improved adjustment.

Other objects of the invention will appear from the following description and claims i when considered together with the drawings.

Fig. 1 shows our improved hinge structure in section as applied to a swinging door; Fig. 2 is a sectional view taken on line 2-2 of Fig. 1; Fig. 3 is a like view showing the door in a diferent position; and Fig. 4 is a detail perspective view of the means for securing the cam member in adjusted position.

Upon the door frame'l there is fixed the bracket 2 which is provided with the an` nular serrated, ribbed or toothed portion 3 and up through the center of which extends the screw bolt 4 through the opening 5 for securing in adjusted position the cam member 6. The lower end of this cylindrical cam member 6 is provided with the toothed or serrated areas 7 which overlie the lannular serrated portion 3 for inter-engagementtherewith so as to maintain the cam member 6 in Such position to which it may be rotatably adjusted. The cam member 6 is located in setA position by tightening the screw bolt 4. The cam portion 8 is adapted for cooperation with the roller 9 which is mounted r y 1,608,299?y oFFlCE.

LAND, OHIO, -ASSIGNORS OHIO, A CORPORATION i tubular or telcscoping were memben 10 which is fixed to the under edge of the swinging door 1l by means of the screw 12 passing through the bottom thereof.l rlhe tubular member 10 extends throughout substantially the entire extent oi the cam member 6 so as to conceal from View the several working parts and at the' same time to present a neat. appearance. This particular arrangement serves also to protect the parts against dirt and the natural elements. The cam surface 8 is provided with a dwell portion '13 in the lowest part of the cam surface, this dwell portion being adapted to determine the raised position of the roller 9 and likewise of the door 11. By loosening the screw bolt 4 and rotatably adjusting the cam member 6 it will be seen that the position to which the door will come to rest may be varied accordingly` as it is desired to have the door automatically return to an open or closed .position Into the upper edge of the door 11 there is secured the pin 14 which extends up through the opening 15 provided in the annular bracket 16 which is xed upon the door frame 1. As the door is swung so as to cause the roller 9 to move up along the cam surface 8, the pin 14 will likewise move vertically upward through the opening 15 so as to permit the upward movement of the door. These parts at the upper edge of the door are so constructed*v and arranged that engagement of the lock nut 1-7 with' the horizontal V,portion of the bracket 16 'will' determinethe limit to which the door may be swung. Ot course, upon'releasing the door lit will return by gravity so asto bring the roller to rest inthe dwell portion 13.

Thus it will be seen that by'loosening the serewbolt 4 the cam member' may be rotated so as to bring the dwell portion 13 to the point desired and then by'tightening the screw bolt 4 the cam member 6 may be secured in such set position, the vteeth in the portions bers being -drawn into firm interengagement with each other so as ,to prevent accidental displacement of the cam member. By virtue of the cylindrical form of cam 6,

vit is possible to adjust the same throughout 360; in other words, there is no limit to its rotary adjustment.V Furthermore, the cam member 6 can be moved to any desired posi- 5 and 7 on the two memf tion by merely turning the same in the manner above described and without removing the same ,from the bracket 2.

We have provided also the annular toothed portion 3 upon the other side of the bracket 2 so as to permit the same to be secured in inverted position upon the door frame, as indicated by dotted lines in Fig. 1, when for instance there is not sutiicient clearance below the door to permit the arrangement shown in full lines.

That we claim is 1. A hinge structure for the lower portion ot a swinging door, comprising" a bracket adapted to be secured upon a door frame and provided with a/ serrated portion, a cam member adjustably vmounted upon said bracket and provided with a serrated portion for cooperation with the serrated portion otsaid bracket, a screw extending upwardly through said bracket into said cam member for securing the' same together in any adjusted position of said cam member relative to said bracket, a hollow tubular;

of a swinging door, comprising a bracket having a door frame engaging portion and f an angular supporting portion, said bracket being adapted to be secured upon a door frame with the supporting portion thereof either yat the top or at the bottom of the door frame engaging portion, a cam member adjustably mounted upon the supporting portion of said bracket and provided with a serrated pprtion, both sides ofthe supportingI portion of said bracket .being also provided with serrated portions for eo-operation with a serrated portion of said cam member, depending upon whether the bracket is in upright or in inverted position, a screw extend- I-ing upwardly through the supporting por` tion. of said bracket into said cam member for securing the same together 1n any adjusted position of said cam member relative i vadapted for'cooperation with the cam surfare ot said cam member.

In testimony whereof we hereby affix our slgnatures.

ROBERT F. CARPENTER. THOMAS F. ANDERSON. 

